GMC TERRAIN 2018 Owner's Manual page 79

78 Navigation
The route prohibits the entry of a
vehicle due to a regulation by
time or season or any other
regulation which may be given.
Some routes might not be
searched.
The route to the destination
might not be shown if there are
new roads, if roads have
recently changed, or if certain
roads are not listed in the map
data. See Maps 0 55.
To recalibrate the vehicle's position
on the map, park with the vehicle
running for two to five minutes, until
the vehicle position updates. Make
sure the vehicle is parked in a
location that is safe and has a clear
view of the sky and away from large
obstructions.
If the System Needs
Service
If the navigation system needs
service and the steps listed here
have been followed but there are
still problems, see your dealer.
Map Data Updates
The map data in the vehicle is the
most up-to-date information
available when the vehicle was
produced. The map data is updated
periodically, provided that the map
information has changed and the
vehicle has a relevant service plan.
For questions about the operation of
the navigation system or the update
process, call the GM Nav Disc
Center at 1-877-NAV-DISC
(1-877-628-3472) or see
www.gmnavdisc.com. If updates are
needed, call the GM Nav Disc
Center or order online.
Over-the-Air Vehicle Map
Updates
If equipped, the infotainment system
can receive map updates over the
air. Map updates occur within a
161 km (100 mi) radius around the
home address on file. This
boundary will adjust over time
based on driving patterns. The
vehicle uses a Cloud-connected
service to receive the data and
downloads it to the system s
onboard SD card, if equipped. The
SD card is required for navigation
system function.
When a map update is available, a
prompt will appear on the
infotainment display. Once the
update is accepted, it will download
and run in the background without
interrupting any infotainment
functions. The download will carry
over ignition cycles, stopping and
starting where it left off. The
updates can be set to download
automatically.
See www.gmnavdisc.com for
information on ordering, purchasing,
and installing a new or replacement
SD card. Features are subject to
change. For more information on
this feature, see my.gmc.com/learn.
Database Coverage
Explanations
Coverage areas vary with respect to
the level of map detail available for
any given area. Some areas feature
greater levels of detail than others.
If this happens, it does not mean